Leveling valve
US3964504A · kind A · utility
3Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1974 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | May 7, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8659
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hydraulic valving mechanism for controlling an object in a normally level position such that upon a shifting of the same from level an actuating mechanism is driven to return the object to the desired level, such valving mechanism including a valve housing with control ports therein with a gravity responsive member therein to open and close selected ones of the ports depending upon the direction the same is shifted from level with the ports being interconnected to a main control valve for shifting of the same to direct fluid to the proper side of the actuating mechanism to return the object to its normal, level position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.